Thanks to the work of scientists, historians and other professionals, we learn more and more about the world with every passing day. The more we learn, the more our understanding of the way things work changes, with our old ideas being updated or corrected whenever we prove them wrong.

Unfortunately, knowledge changes so fast that it can be hard to keep up, and sometimes the wrong information ends up being the information that sticks around the longest. Not only that, but some ideas have been around for so long that it seems like they must be true, even if they were never based on real facts in the first place.

All of this means that there are hundreds of so-called facts floating around the internet, which were either once accepted ideas that were later disproven or are just common theories that we can't even trace back to their origins. Often these urban myths can seem perfectly plausible, and even more believable than the truth. So the question is: can you tell the difference?

If you want to find out just how many of the facts you go around believing and repeating every day are actually total nonsense, then this is the quiz for you. We've also sprinkled in some true facts that sound like they must be fake, just to show how difficult it can sometimes be to tell fact from fiction. Think you're up for the challenge? Then go ahead and take this quiz if you want to find out!